TID: Mystic BBS 1.12 A46   
   MSGID: 1:387/26 fd09e21c   
   REPLY: 1:229/426 979951B9   
   TZUTC: -0500   
   Here's the current state of my PDP-8 FPGA project:   
   https://youtu.be/cfQxtfuVsAA   
      
   I've got the front panel and 4K RAM working. It can't execute any opcodes yet   
   (that's next!) but the front panel can be used to manipulate and view   
   registers and RAM.   
      
   The hardware is a Xilinx Spartan6-based development board with an IO shield on   
   top. Since the Spartan6 line is discontinued, these are fairly cheap boards   
   (as FPGA boards go); both together were about $100.   
      
   The board is a Chinese clone of the once-crowdfunded-but-now-obsolete Mojo   
   board and works with the Mojo IDE. The Mojo IDE requires a free version of   
   Xilinx ISE and allows use of either Verilog or Lucid (a hardware description   
   language peculiar to Alchitry Labs).   
      
   Alchitry Labs' current selection of FPGA development boards are the Cu, Au,   
   and Au+. They're more modern and capable than the Mojo, but more expensive.   
   However, projects should be fairly easy to move from the Mojo to these newer   
   boards if one desired and the IO shield for the newer boards is functionally   
   identical to the Mojo IO shield, but significantly smaller physically.   
      
   Jeff.   
      
   "For every complex problem there is an answer that is clear, simple, and   
   wrong." -- H. L. Mencken, who indeed was a racist thereby proving himself   
   right.   
   --- Mystic BBS v1.12 A46 2020/08/26 (Raspberry Pi/32)   
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